DNA Structure and Replication Questions

• One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?
• The melting of 40-45 bp at the oriC site of E. coli requires
• In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as
• The role of primase is to
• The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by
• Which of the following species lack a 'classical' histone H1?
• The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is
• The packing ratio of nucleosomes is about
• Each replication bubbles consists of
• The nicks or gaps between Okazaki fragments are eventually sealed by
• The rapid appearance of HIV-1 strains that are resistant to AIDS drugs is due in part to which of the following property of its reverse transcriptase?
• 30 nm wide helix with five or six nucleosomes per helix is known as
• What is the approximate percentage of repetitive DNA sequences in human DNA?
• Okazaki fragments occur on the __________ and are bonded together by __________
• Overwinding or overtightening of DNA during replication is caused and removed by
• In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band
• Which enzyme catalyzes the elongation of DNA molecules?
• Deoxyribonucleoside triphosphates, being need in the chain termination methods are
• Reverse transcriptase produces
• Without telomerase, what would happen to the ends of chromosomes after each round of replication?